Abstract

This paper presents a compact CPW-fed MIMO antenna for UWB applications. The four-element CPW-fed antenna is designed as a radiator. The isolations between the same polarized elements and the orthogonally polarized elements are more than 20 and 25 dB, respectively. The floating parasitic element is used to improve isolation at a higher frequency. The simulated and measured 10 dB impedance bandwidth of the proposed MIMO UWB antenna is from 3.6 to 10.3 GHz. The return loss, isolation, radiation patterns, envelope correlation coefficient (ECC), total active reflection coefficient (TARC), diversity gain (DG), and channel capacity loss (CCL) are simulated and/or measured for the proposed antenna. ECCs are less than 0.0022, DGs are above 9.9 dB, TARC has minimum variations in different angles and CCLs are less than 0.4 bits/s/Hz at 10 dB impedance bandwidth. Due to which the proposed antenna can be used in portable UWB applications.

中文翻译：

---

具有Wi-Fi和WLAN陷波功能的紧凑型4x4 CPW馈送MIMO天线，适用于UWB应用

摘要

本文介绍了一种用于UWB应用的紧凑型CPW馈送的MIMO天线。四元素CPW馈电天线设计为辐射器。相同偏振元件和正交偏振元件之间的隔离分别大于20 dB和25 dB。浮动寄生元件用于改善较高频率下的隔离度。拟议的MIMO UWB天线的仿真和测量的10 dB阻抗带宽为3.6至10.3 GHz。对于所提出的天线，模拟和/或测量了回波损耗，隔离度，辐射方向图，包络相关系数（ECC），总有源反射系数（TARC），分集增益（DG）和信道容量损耗（CCL）。ECC小于0.0022，DG大于9.9 dB，TARC在不同角度的变化最小，CCL小于0。10 dB阻抗带宽时为4位/ s / Hz。因此，建议的天线可以用于便携式UWB应用中。